Improved sugar-evaporator



' n. s. com.

Evaporating Pan No. 41,195. Patented Jan. 12, 1864 lnventon Witnesses! IAM PHOTO-LITHO.CU.N.Y. (OSBORNE'S PROCESS.)

UNTTE STATES 'ATENT Trier.

IMPROVED SUGAR-EVAPORATOR.

Specification forming part of Letters Patent No. H, 195, dated January12, 1864-.

To all whom it may concern.-

Be it known that I, R. S. COLE, of Mount Pleasant, in the county ofHenry and State of Iowa, have invented a new and Improved Evaporator forSaceharine Liquids, &c.; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe accompanying drawings, forming a part of this specification, inwhich Figure 1 represents a longitudinal vertical section, the plan ofsection being indicated by the line 00 a, Fig. 2. Fig. 2 is a transverseVertical section taken in the plane indicated by the line y 3 Fig. 3.Fig. 8 is a horizontal section of the same, the line 2 c, Fig. 1,indicating the plane of section.

Similar letters of reference in the three views indicate correspondingparts.

This invention consists in the arrangement of shoulders facing towardthe fire at the bottom of the pan or pans-one at the end of eachsectionin combination with a descending flue, in such a manner that thefire strikes those parts of the bottom forming the shoulderswithincreased power, and the juice contained in the wells formedby saidshoulders in the interior of the pan is heated quicker than the juice inthe other parts of the pan, and thereby the scum is thrown up andseparated with superior facility.

To enable others skilled in the art to make and use my invention, I willproceed to describe it.

A represents a furnace built up of brick or other suitable material, andprovided with a door, B, and fire-grate C, from which a fine,

D, leads to the chimney E. This flue runs in a downwardly-inclineddirection, so that the heat will be thrown with increased force againstthe bottom of the pan, which is placed on the furnace.

F is the pan, made in three compartments, G H I; or it may be made inthree separate sections (or more) placed side by side. The compartmentsor sections descend from the fire-place toward the chimney, the highestor heating-pan being placed directly over the fire. The bottom of thepan F is provided with shoulders at b c, facing toward the fire, so thatthe heat strikes the same with increased power. By these shoulders wellsd e f are formed in the interior of the several compartments of the pan,and the wells d e of the compartments G H are situated close to thepartitions g h, which separate the compart ments or sections one fromthe other. Gates *5 j in these partitions open or close thecommunication between them.

The juice is admitted to the first or highest compartment from thesupply-tank J, which is placed on the corner of the pan, as clearlyshown in Figs. 1 and 3, and as the boiling proceeds it is gradually letdown to the second. and third or finishing compartment. That portion ofthe juice contained in the wells (1 e f is exposed to a higher heat thanthe juice in the other parts of the compartments, and consequently thescum rises in said wells and floats toward the coldest part of the pan,where it can easily be removed. The first or heating compartment isfurthermore partially cooled by the stream of fresh juice admitted to itfrom the supply-tank, and the separation of the scum is thereby furtherfacilitated. The flue D is provided with an opening, 75, in its sideunder the second compartment of the pan, and from this opening a sideflue, K, extends to the chimney. Dampers Z m n-one close behind theopening is in the flue D, one at the bottom of the chimney, and one inthe side flue-serve to regulate the current of heat. If it is desired tothrow the heat against the bottom of the finishing-compartment I, thedampers Z and m are opened and the. damper a is closed, and the heatpasses through the main flue D to the chimney. If it is desired to cooloff the finishing compartment, the dampers Z and m are closed, and thedamper n is opened and the heat is turned through the side flue to thechimney. By these means the temperature of the finishing-compartment canbe regulated at pleasure, and the boiling can be continued withoutinterruption in the compartments G H while the molasses in thefinishing-compartment is cooled off and removed.

I am aware that acombination of shoulders and partitions resembling mineis described in Letters Patent granted to D. I. Durfey, May 17, 1859;but in the said Durfeys apparatus the principal object of my inventionis defeated by having the shoulders presented away from instead oftoward the fire, and by using an ascending instead of a descending flue.

I am also aware that in A. S. Wilders apparatns to operate in the sameway as mine.

plication, patented J nne 23, 1863, shoulders The combined arrangementof the fire-place presented toward the fire are employed; but 6,descending or diminishing flue D shoulders in this neither thedescending flue nor a simia b c, depressions d cf, and partitions g h,all lar arrangement of partitions is employed in as herein shown anddescribed, and for the combination with the said shoulders, and it ispurposes explained. therefore impossible for the said Wilders ap- R. S:COLE.

W'itncsses:

THOMAS Donns,

DAVID FIsrIER.

WVhat I claim as new, and desire to secure by Letters Patent, is

